What Is IOD Interest Paid in Legal Settlements?

IOD interest in legal settlements is money added on top of a judgment or settlement to compensate you for the time between the original loss and the day you actually get paid. It stands for interest on damages, and it comes in two parts: interest that builds up while the case is pending, and interest that keeps building after the court enters judgment until the defendant pays. The IRS treats this interest as taxable income, even when the damages it accompanies are tax-free.¹

The reason for the add-on is straightforward. Lawsuits often take years. During that time the defendant is holding money that rightfully belongs to you, and a dollar today is worth more than a dollar years from now. IOD closes that gap so a defendant cannot gain a financial advantage by dragging out proceedings. It is separate from the compensatory or punitive damages the court awards for the underlying injury or breach.

The Two Phases of Interest

Pre-judgment interest covers the stretch from the date of the loss (or in some cases the date the lawsuit was filed) through the day the court enters a final judgment. That period can span years of discovery, motions, and trial. The exact starting date often depends on whether the claim is “liquidated,” meaning the amount owed was fixed or clearly ascertainable. Courts historically limited pre-judgment interest to liquidated claims, but many jurisdictions have moved away from that distinction and now treat it as an ordinary part of compensatory damages.

Post-judgment interest begins the moment the court enters judgment and keeps running until the defendant actually pays. If the losing side appeals, the clock does not stop; interest continues to accrue throughout the appeal.²

How the Amount Is Calculated

Three inputs drive the number: the principal judgment, the applicable rate, and the number of days interest runs. Interest is typically figured daily so the payoff is accurate whenever the check clears. The annual rate is divided by 365 to produce a daily factor, then multiplied by the principal and the elapsed days.

Whether the balance compounds depends on the court. Many state courts apply simple interest, so the rate is applied only to the original judgment and the balance does not grow on itself. Federal courts, by statute, compound interest annually: each year’s accrued interest is added to the balance, and the next year’s interest is calculated on that higher amount.²

State Court Rates

Each state sets its own rate by statute. Some fix a flat percentage, with ten percent per year being common. Others tie the rate to a market benchmark like the federal prime rate plus a set margin. Because the rates vary widely, the interest portion of an award can look very different depending on which state’s courts hear the case. Your state’s civil procedure code or post-judgment interest statute will spell out the current rate.

Federal Court Rates

In federal civil cases, the post-judgment rate is the weekly average one-year constant maturity Treasury yield published by the Federal Reserve for the calendar week before the judgment.² That rate moves with the market and tends to run below the flat statutory rates many states use. The Administrative Office of the United States Courts distributes the current figure to federal judges.

How IOD Is Taxed When You Receive It

The interest itself is always taxable. Federal tax law lists interest as a category of gross income, and there is no carve-out for interest attached to a legal award.¹ What changes from case to case is the tax treatment of the underlying damages the interest is sitting on top of.

Damages received on account of personal physical injury or physical sickness are generally excluded from gross income.³ That exclusion covers the compensatory portion of the award. It does not cover the interest. Even if your settlement for a physical injury is entirely tax-free, you owe income tax on every dollar of pre-judgment and post-judgment interest included in the payment.⁴

When the underlying claim is not a personal physical injury (employment discrimination, breach of contract, defamation, or emotional distress not caused by a physical injury), the entire award is ordinary taxable income. The IRS has confirmed that damages for emotional distress, back pay, and similar non-physical claims do not qualify for the Section 104(a)(2) exclusion.⁵ In those cases, IOD simply adds to an already fully taxable payout.

Reporting It on Your Return

Report settlement interest on line 2b of Form 1040 as interest income.⁴ If your total taxable interest for the year is more than $1,500, you also file Schedule B.⁶ With a sizeable judgment and years of accrued interest, crossing that threshold is almost automatic.

The payer, usually an insurance company or the defendant’s legal team, reports the interest portion to the IRS. Interest paid by a bank or financial institution is generally reported on Form 1099-INT if it exceeds $10.⁷ In other cases, it may show up inside the total on a Form 1099-MISC. The IRS gets a copy either way, so leaving it off your return invites penalties and back taxes.

Check how your settlement check is allocated. If the payer has not broken out the interest separately, ask your attorney or the paying party for an itemized statement before you file. Knowing the exact split between tax-free damages and taxable interest is what makes accurate reporting possible.

Attorney Fees on the Interest Portion

If your attorney took a percentage of the total recovery, part of that fee came out of the taxable interest. Under current law, legal fees incurred to produce or collect taxable income are classified as miscellaneous itemized deductions, which are suspended and not deductible through at least 2025.⁸ One exception matters for certain plaintiffs: attorney fees tied to claims of unlawful discrimination (such as Title VII employment cases) can be deducted as an adjustment to income, up to the amount of the judgment or settlement included in your taxable income. For most personal injury plaintiffs, the attorney’s share of the interest is not deductible, which means you owe tax on the full interest amount even though you did not keep all of it.

If You Are the One Paying the Interest

Interest paid on a judgment is not automatically deductible for the payer. Federal tax law disallows deductions for “personal interest,” which covers interest on debts that are not tied to a trade or business, investment activity, or a qualified residence. Interest on a personal injury judgment or a personal dispute generally falls in this non-deductible bucket.⁹ If the judgment arose from a trade or business, the interest portion may be deductible as an ordinary and necessary business expense, though interest on judgments paid to a government entity for a legal violation is generally not deductible, with narrow exceptions for restitution or compliance payments.¹⁰

1
Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined
2
Office of the Law Revision Counsel. 28 USC 1961 – Interest
3
Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness
4
Internal Revenue Service. Settlements – Taxability
5
Internal Revenue Service. Tax Implications of Settlements and Judgments
6
Internal Revenue Service. About Schedule B (Form 1040), Interest and Ordinary Dividends
7
Internal Revenue Service. About Form 1099-INT, Interest Income
8
Internal Revenue Service. Publication 529, Miscellaneous Deductions
9
Office of the Law Revision Counsel. 26 US Code 163 – Interest
10
Office of the Law Revision Counsel. 26 US Code 162 – Trade or Business Expenses